forked from Imagelibrary/rtems
eea21eaca1
The work area initialization was done by the BSP through bsp_work_area_initialize(). This approach predated the system initialization through the system initialization linker set. The workspace and C program heap were unconditionally initialized. The aim is to support RTEMS application configurations which do not need the workspace and C program heap. In these configurations, the workspace and C prgram heap should not get initialized. Change all bsp_work_area_initialize() to implement _Memory_Get() instead. Move the dirty memory, sbrk(), per-CPU data, workspace, and malloc() heap initialization into separate system initialization steps. This makes it also easier to test the individual initialization steps. This change adds a dependency to _Heap_Extend() to all BSPs. This dependency will be removed in a follow up change. Update #3838.
46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
/*
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* This set of routines are the BSP specific initialization
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* support routines.
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*
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* COPYRIGHT (c) 1989-2008.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <bsp.h>
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#include <bsp/bootcard.h>
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#include <rtems/sysinit.h>
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/* Tells us where to put the workspace in case remote debugger is present. */
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extern uintptr_t rdb_start;
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static Memory_Area _Memory_Areas[ 1 ];
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static const Memory_Information _Memory_Information =
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MEMORY_INFORMATION_INITIALIZER( _Memory_Areas );
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static void bsp_memory_initialize( void )
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{
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void *begin;
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uintptr_t size;
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begin = &end;
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size = rdb_start - (uintptr_t)begin;
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_Memory_Initialize_by_size( &_Memory_Areas[ 0 ], begin, size );
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}
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RTEMS_SYSINIT_ITEM(
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bsp_memory_initialize,
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RTEMS_SYSINIT_MEMORY,
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RTEMS_SYSINIT_ORDER_MIDDLE
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);
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const Memory_Information *_Memory_Get( void )
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{
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return &_Memory_Information;
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}
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